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Table 3 The data for Δ , Σ , P ¯ , and y ¯ from annual report data in Liaonan village, Xingzi county, Jiangxi Province, P. R. China

From: Field transmission intensity of Schistosoma japonicum measured by basic reproduction ratio from modified Barbour’s model

Parameter 2003 2004 2005 2006 2007 2008 2009 2010
Δ(/m2) 28.0 33.9 91.5 133.5 41.1 17.5 11.3 2.4
Σ(/m2) 0.030 0.020 0.048 0.017 0.031 0.018 0.031 0.018
P ¯ (%) 0.0671 0.0533 0.0631 0.0454 0.0454 0.0454 0.0453 0.0457
y ¯ (%) 0.00021 0.00005 0.00013 0.00014 0.00018 0.00050 0.00077 0.00002
  1. Note: Δ means the density of snails, Σ means the density of definitive hosts, P ¯ means the average prevalence of infection in hosts in one year, y ¯ means the average prevalence of infection in snails in one year.